| 摘要 |
The present invention provides a magnetic recording medium which has a back coat layer excellent in surface smoothness and durability and is excellent in electromagnetic conversion property. A magnetic recording medium, comprising at least a non-magnetic support, a lower non-magnetic layer on one surface of the non-magnetic support, an upper magnetic layer on the lower non-magnetic layer, and a back coat layer on the other surface of the non-magnetic support, wherein the lower non-magnetic layer contains at least carbon black, a non-magnetic inorganic powder other than carbon black, and a binder resin material, the upper magnetic layer contains at least a ferromagnetic powder, and a binder resin material, and the back coat layer contains at least carbon black, a non-magnetic inorganic powder other than carbon black, a carboxylic acid amine salt, a phosphate amine salt, and a binder resin material.
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